Adding other charge from database field

I want to add a charge to the order, but not a flat fee or calculated fee, just add an amount from the database which the client enters. I also want to add 10% to the order as a variable to allow the admin the ability to charge as much as 10% over the order on the credit card.

you would need to create a database table to contain each of these charges.

the table should contain only one record with a column for each charge set one column to hold the amount of the flat rate, set the other column to hold the percentage amount as a decimal, i.e. "0.10" for %10.

on the cart page, create a recordset to return the record from this table.

Go to the Server behaviors panel and click the plus button. select eCart -> General -> Set Session Value. set the trigger to "If session Variable is not defined", give the session a unique name like "FlatRate", click the lightning bolt next to value and select the flat rate column from the recordset.

Repeat this step for the percentage column to store the database values in the session variables.

In the eCart object, you can create the charges t use the session variables.

use the triggers:
Session Variable Exists:
Session Variable name "FlatRate"

And
Total number of unique items > 0

for the calculation use flat rate and enter:
$_SESSION['FlatRate']


for the percentage rule, use based on the cart subtotal:
subtotal "Times" "$_SESSION['percentage']

make sure to use the same names for the session variables as you use when setting them in the set session value behavior.

The customer decided he did not need the 10%, so we just need the flat rate from the column in the database to work. I am getting this error on the confirm page.
Notice: Undefined variable: itmObj in /services9/webpages/h/o/homesteadnaturalmeats.com/secure/WA_eCart/WA_eCart_Definition_PHP.php(477) : eval()'d code on line 1

Notice: Trying to get property of non-object in /services9/webpages/h/o/homesteadnaturalmeats.com/secure/WA_eCart/WA_eCart_Definition_PHP.php(477) : eval()'d code on line 1

Notice: Undefined variable: itmObj in /services9/webpages/h/o/homesteadnaturalmeats.com/secure/WA_eCart/WA_eCart_Definition_PHP.php(477) : eval()'d code on line 1

Notice: Trying to get property of non-object in /services9/webpages/h/o/homesteadnaturalmeats.com/secure/WA_eCart/WA_eCart_Definition_PHP.php(477) : eval()'d code on line 1

Warning: Cannot modify header information - headers already sent by (output started at /services9/webpages/h/o/homesteadnaturalmeats.com/secure/WA_eCart/WA_eCart_Definition_PHP.php(477) : eval()'d code:1) in /services9/webpages/h/o/homesteadnaturalmeats.com/secure/confirm.php on line 472

in the eCart object, the Full Details calcualtion is wrong:

[Quantity] . ' ' . [Name] . '[SKU] (' . [ID] . ')'

should be:

[Quantity] . ' ' . [Name] . ' ' . [SKU] . ' (' . [ID] . ')'

I'm trying to add an option "Pay by Instalment" on the cart Page.
As I'll be invoicing customers manually from PayPal, all I need is:

Give an option to customer to pay instalments increasing total amount in the cart.
If customer chooses to pay by instalments (clicks on check box), certain percentage (e.g 10%) is added to the bottom cart total amount.
This amount needs to be recorded on Order Summary table and Order Detail table.

Can you suggest how can I do this?

add the checkbox to the checkout page named installments and set the checked value to 1:
[php]<input name="installments" type="checkbox" id="installments" value="1" />[php]

on the confirm page, there is a collection of hidden form elements near the bottom, add a new one with the same name as the checkbox and set to capture the value posted from the checkout page:

<input name="installments" type="hidden" id="installments" value="<?php echo((isset($_POST["installments"]))?$_POST["installments"]:"") ?>" />

open the server behaviors panel on the confirm page and click the plus button, select eCart -> General -> Set Session Value

for the trigger and the value click the lightning bolt icon and select the installments form element, set the name to "installments"

in the eCart object, create a new charge.

Name:
Installment charge

Triggers:
"Bassed on Session Variable Value"
If the session variable "installments" has a value of "1"

Calculation:
"Based on cart subtotal"
cart Subtotal "times" "0.1"

Thank you Jason

That's exactly what I wanted. Works well.

glad to hear it is working.